42089217 has 16 divisors (see below), whose sum is σ = 58130688. Its totient is φ = 27069840.

The previous prime is 42089213. The next prime is 42089219. The reversal of 42089217 is 71298024.

It is a happy number.

It is not a de Polignac number, because 42089217 - 2² = 42089213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42089213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8742 + ... + 12672.

It is an arithmetic number, because the mean of its divisors is an integer number (3633168).

Almost surely, 2^42089217 is an apocalyptic number.

It is an amenable number.

42089217 is a deficient number, since it is larger than the sum of its proper divisors (16041471).

42089217 is a wasteful number, since it uses less digits than its factorization.

42089217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 42089217 is about 6487.6202879022. The cubic root of 42089217 is about 347.8486179334.

The spelling of 42089217 in words is "forty-two million, eighty-nine thousand, two hundred seventeen".